Pulley construction



J. B. CASTING.

PULLEY CONSTRUCTION. Aryucmon HLED'JULY 12, 1920.

Patented Dec. 21, 1920.

2 SHEETS-SHEET I- DWI/0J3. Ccwng.

J. B. CASTINO.

PULLEY CONSTRUCTION. 7 APPLICATION FILED JULY 12, 1920.

1,362,778. I Patented Dec. 21, 1920.

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UNITED STATES JOHN B. CASTING, OF CHICAGO, ILLINOIS.

PUL'LEY CONSTRUCTION.

Application filed July 12 To all 10 [0771 it may concem Be it known thatI, JOHN B. CAs'rINo, a citizen of the United States, residing atChicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in Pulley Construction, of which thefollowing is a specification. 1

This invention relates to improvements in pulley constructionparticularly adapted, though not necessarily limited in its use as adriving or driven pulley and one of the objects of the invention is toprovide an improved pulley of this type, the active surface of which islaminated and embodies any desired number of laminations or layersformed of a series of comparatively narrow segmental shaped elementsconstructed of leather or any other suitable material, the elementsbeing assembled so that'the joints of the adjacent layers will bearranged in staggered relation, the said elements and the pulley hubhaving improved inter-engaging means whereby the parts may be detachablysecured together.

A further object is to provide an improved pulley of this characterembodying a series of segmental shaped sections each having a tongueprojecting from the inner edge thereof, the said tongue being arrangedto one side of the longitudinal center of the segment whereby thesegments of one series will overlap the joints of the segments of thenext adjacent series, thereby rendering it possible to have all of thesegments of a uniform shape.

A further object is to provide an im proved pulley of this character soconstructed that the parts may be formed by vpunch press operation ordie casting whereby the cost of production will be reduced and millingof the parts will be dispensed with.

To the attainment of these ends and the accomplishment of othernew anduseful objects as will appear the invention consists in the features: ofnovelty in substantially the construction, combination and arrangementof the several parts hereinafter more fully described and claimed andshown in the accompanying drawings illustrating this invention and inwhich Figure 1 is a view partly in side elevation, partly broken awayand partly in section of one form of pulley.

Fig. 2 is an enlarged detail sectional view as taken on line 22 Fig. 1..

Specification of Letters Patent. Pate'llted 'Dec. 2 1, 1920.

1926. Serial No. 395.550.

Fig. 3 is a top pl an view of a pulley showm the staggered relation ofthe elements.

*1g. 4 1s a detail perspective view of one of the elements constitutingthe surface of the pulley.

F ig.'5' is a detail perspective view of one of the end members whichcooperates with the segments.

F"g; 6 is a view similar to Fig. 1 of a modified form of the invention.

Fig. 7 is a side elevation of one of the elements which constitutes thebody of the pulley in the form shown in Fig. 6:

8 is a top plan view of a pulley.

Fig. 9 is a detail sectional view taken on line 99 Fig. 6. 1

Fig. 10 is a detail lar to Fig. 4.

Fig. 11 is a detail perspective view similar to Fig. 5. j

Referring more particularly to the drawings and in the form of theinvention shown perspective view simi-.

in Figs. 1 to 5, the pulley embodies a body portion 15 having a hub 16by means of which the pulley may be secured to a shaft.

The periphery 17 of the pulley is provided along one of its edges with acircumferential flange 18, the other edge of the pe riphery beingpreferably recessed as at 19. The periphery of the body is provided witha plurality of grooves 20 having restricted inlets 21 and which groovesopen through the periphery of the body portion.

These grooves are arranged about the periphery, are spaced from eachother and QX-' tend lengthwise of the pulley and are sub stantiallyparallel with the shaft 22 to which the pulley is secured.

These recesses 20 may be of any desired size and configuration and anynumber may be provided about the periphery of the pulley.

The surface of the pulley is formed by a series of segmental shapedelements 23 which are comparatively narrow and are each provided with. atongue or projection 24 extending from the inner edge 25 of the elementsand this tongue is provided with an opening 26 therethrough. The tongue24 is preferably of a thickness equal to the thickness. of the element93 and is located at a point to one side of the longitudinal center ofthe element so. as to form a short end 27 and a long end 28.

The tongues 24- are of a size and configuration to fit within andsubstantially fill the segments 23 is assembled in the same man- 7 nerbut the elements 23 are reversed with respect to the elements of thenext adjacent series so that the long end 28 will be disposed on theside of the tongue 24 when placed upon the pulley, opposite to the sideon which the long end of the next adjacent series of elements isarranged so that the elements of adjacent series will overlap and breakjoint with the elements of the next adjacent series.

These elements 23 may be constructed of any suitable material and may beof any desired thickness and height. A suitable and eflicient materialfor this purpose is leather but it is to be understoodthat it is notdesired to be limited to any specific material from which the segments23 are to be constructed, as any material suitable for the purpose maybe employed.

Then the grooves 20 have been thus filled by the lateral positioning ofthe elements .23 therein, the openings 26 in the tongues or grooves 20so that the opening 31 will reg 'ister with the openings 26. The endplate is also of a segmental shape but differs from the elements 23 inthat the tongue or projection 30 is preferably arranged at thelongitudinal center of the element 29 so that the element 29 willproject equally on opposite sides of the'tongue or projection 30.

This tongue or projection 30 will extend into the grooves. 20 and anannular member 32 is then applied to the reduced portion 19 of theperiphery 17 so as to abut the end plates or elements 29. These elements32 are provided with openings 33 therethrough to register with theopenings 31 of the plates 29 and fastening bolts 34 having heads passthrough suitable openings 36 in the flange 18, through the registeringopenings 26 of the elements 23 and through the open int, in the annularmember 32. The ends of the bolts are preferably threaded as at 36 t0receivenuts 37 which latter are preferably seated in enlarged portions38 of the openings The nuts 37 are all tightened upon the bolts 34 andthis operation will cause the annular member 32 to coiiperate with theflange 18 to clamp the segments 23 therebetween to form the activesurface or edge of the pulley.

The annular member 32 and the flange 18 may be of any desired height andif desired and when the surface of the pulley has been thus assembledand secured in position, such surface may be crowned or shaped to meetthe purpose for which it is desired or if desired the entire peripherymay be flat.

In the form of the invention shown in Figs. 6to 11 the body portion ofthe pulley is constructed of a series of disk-like members 39 preferablycut away for the purpose of lightness, each of the disks is providedwith a recess 40 opening through the periphery thereof and which recessis provided with a reduced opening 41. 7

Any number of these disks or elements 39 may be assembled and fastenedtogether by means of suitable bolts or tie rods passing through openings42.

The periphery of the pulley is constructed in the same manner as in theform shown in Figs. 1 to 5. When the body portion of the pulley has beenthus constructed the segments 23 are placed in position in the groove 40to form annular members, the segments being so disposed that theadjacent segmentswill overlap or break joint with the segments of thenext adjacent series. Annular members 4344 are provided with openings45-46 therethrough which register with the alined openings 26 of thesegments 23 and these annular members are placed adjacent the oppositefaces of the end series of segments 23. Fastening bolts 47 having heads48 and threaded extremities I 49 pass through the openings 45 26 and 46while nuts 50 are placed upon the threaded ends 49 of the bolt to drawthe annular ele ments 4344 together thereby clamping the segments 23. I

Obviously the heads 48 and nuts-5O may be recessed into the annularmembers 43-44 so as to prevent the ends of the bolts from projectingbeyond the lateral face of the pulley.

The disks 39 may be formed of any suitable material as may also thesegments 23.

If desired segmental shaped plates 51 may be provided to cooperate withthe segments 23 and which plates are provided with an ear or projection52 having an opening 53 therethrough, the ear or projection beingdisposed at the longitudinal center of the element 51 so that the endsof the element will project for an equal distance on With this improvedconstruction it will use material which would otherwise be scrapped. I

It will also be manifest that the active surface of the pulley formed bythe elements 23 may be readily repaired as the worn elements 23 may bereadily replaced by new ones.

While the preferred form of the invention has herein been shown and;described: it istto be understood that various changes may be made inthe details of construction, andin the combination and arrangement ofthe several parts within the scope of the claims without departing fromthe spiritof this invention.

What is claimed as new is 1. A pulley of the character describedembodying a body portion provided with a series ofspaced longitudinalgrooves arranged around and opening through the peripherythereof, eachof said grooves having a reduced entrance opening, a plurality of disklike annular elements encompassing the said body portion, each of thesaid elements embodying av plurality of segments, each segment having atongue projecting from the inner edge thereof, said tongues conformingto the contour of and adapted to be seated in the said grooves, meansforming closures for the ends of the grooves, and means for exertinglateral pressure upon the segments for clamping the parts together.

2. A pulley of the character described embodying a body portion providedwith a series of spaced longitudinal grooves arranged around and openingthrough the periphery thereof, each of said grooves having a reducedentrance opening, aplurality of disk like annular elements encompassingthe said body portion, each of the said elements embodying a pluralityof segments,-each segment having a tongue projecting from the inner edgethereof, said tongues conforming to the contour of and adapted to beseated in the said grooves, means forming closures for the ends of thegrooves, and means for exerting lateral pressure upon the segments forclamping the parts together, the last recited means embodying tie rodsor bolts passing through the tongues in the respective grooves andengaging the said closures.

3. A pulley of the character described embodyin a body portion providedwith a series of spaced longitudinal grooves arranged around and openingthrough the periphery thereof, each of said grooves having a reducedentrance opening, a plurality of disk like annular elements encompassingthe said body portion, each of the said elements embodying a pluralityof segments, each segment having a tongue projecting from the inner edgethereof, said tongues conforming to the contour of and adapted to beseated in the said grooves, the joints formed at the ends of theproximate segments of adjacent elements beingarranged in staggeredrelation, means forming closures for the ends of the grooves, and meansfor exerting lateral pressure upon the segments for clamping the partstogether.

4. A pulley embodying a body portion having an integral circumferentialflange at. one end having spaced longitudinal grooves within theflangeand opening through the periphery of the body and also through theopposite end of the body, said flange having openings in alinement withsaid grooves, the said grooves having reduced entrance openings, aplurality of disk like annular elements encompassing the body, each ofthe elements embodying a plurality of comparatively narrowsegmentalshaped elements arranged end to end, said segmental elements eaeh havinga tongue projecting from its inner edge conforming to v the contour ofthe groove and adapted to be inserted into the grooves through the openend thereof, means forming closures for the grooves and adapted to abutthe outer annular series of segmental elements, an. annular end plateencompassing the end of the said body and abutting the said closure, andfastening means for securing the parts together.

pulley embodying a bodyportion having an integral circumferential flangeat one end having spaced longitudinal grooves within the flange andopening through the periphery of the body and also through the oppositeend of the body, said flange having. openings in alinement with saidgrooves, the said grooves having reduced entrance openings, apluralityof disk like annular elements encompassing the body, each ofthe elementsembodying a plurality of comparatively narrow segmental shaped elementsarranged end to end, said segmental elements each having a tongueprojecting from its inner edge conforming to the contour of the grooveand adapted to be inserted into the grooves through the open endthereof. means forming closures for the grooves and adapted to abut theouter annular series of segmental elements, an annular end plateencompassing the end of the said body and abutting the said closure,anc. fastening means for securing the parts together, the-said fasteningmeans passing through portions of the segmental elements, the saidflange and the end plate. 1

6. A pulley embodying a body portion having an integral circumferentialflange at one end having spaced'longitudinal grooves within the flangeand opening through the periphery of the body and also through theopposite end of the body, said flange having openings in alinement withsaid grooves, the said grooves having reduced entrance openings, aplurality of disk like annular elements encompassing the body, each ofthe elements embodying a plurallty of comparatively narrow segmentalshaped elements arranged end to end, said segmental elements each havinga tongue projecting from its inner edge conforming to the contour of thegroove and adapted to be inserted into the grooves through the open endthereof, means forming closures for the grooves and adapted to abut theouter annular series of segmental elements, an annular end plateencompassing the end of the said body and abutting the said closure, andfastening means for securing the parts together, the said fasteningmeans engaging the flange and end plate and also passing through thesaid tongues within the grooves. I

7. A pulley embodying a body portion having an integral circumferentialflange at one end having spaced longitudinal grooves within the flangeand opening through the peripheryof the body and also through theopposite end of the body, said flange having openings in alinement withsaid grooves, the said grooves having reduced entrance openings, aplurality of disk like annular elements encompassing the body, each ofthe elements embodying a plurality of comparatively narrow segmentalshaped elements arranged end to end, said segmental elements each havinga tongue projecting from its inner edge conforming to the contour of thegroove and adapted to be inserted into the grooves through the open endthereof, means forming closures for the grooves and adapted to abut theouter annular series of segmental elements, the end of the said bodyadjacent the open ends of the grooves being shouldered to form a seat,an annular end plate encompassing the body and restin upon the seat, andfastening bolts engaging the end plate and the said flange and passingthrough the said tongues within the said grooves.

8. A pulley embodying a plurality of Vannular disk shaped members eachhaving a plurality of recesses opening through the periphery thereof,the entrance opening of said recesses being restricted, said membersbeing secured together to form a body with the respective recessesregistering to form longitudinal grooves opening through the peripheryof the body, a plurality of annular elements each embodying a series ofsegments arranged end to end, said segments each having a tongue adaptedto be inserted into the respective grooves through the end thereof, saidtongues conforming to the contour of and substantially filling thegrooves, means for securing the annular members together, means forforming closures for the ends of the grooves, and means disposed withinthe grooves to engage the said tongues and also engaging the lastrecited means for exerting lateral pressure upon the said segments.

9. A pulley embodying a body portion provided with a series of spacedlongitudinal grooves arranged around andopening through the peripherythereof, each of said grooves having a reduced entrance opening, aplurality of disk like elements encompassing the said body portion, eachof the said elements embodying a plurality of segmental shaped sections,each of said sections having a tongue projecting from the inneredgethereof to one side of the longitudinal center of the section saidtongues; conforming to the contour of and adapted to be seated in thegrooves, and means for securing the parts together and exerting alateral pressure upon the said segments. Y v

10. A pulley embodying a body portion provided with a series of spacedlongitudinal grooves arranged around and opening throughthe peripherythereof, each of said grooves having a reduced entrance-opening, aplurality of disk like elements encompassing the said body portion, eachof the said elements embodying a plurality of segmental shaped sections,each of said sections having a tongue projecting from the inner edgethereof to one side of the longitudinal center of the section, wherebythe segments maybe arranged to break joint with the segments of the nextadj acent annular element, said tongues conforming to the contour ofandadapted to be seated in'the grooves, and means for securing the partstogether and exerting a lateral pressure upon the said segments.

11. A pulley of the character described embodying a body provided with aplurality of grooves opening through the peripherythereof and havingrestricted entrance openings at the periphery of the body, a surface forthe pulley, said surface embodying a plurality of comparatively narrowsegmental shaped elements, tongues projecting from theinner edges of theelements, said tongues conforming to the contour of and adapted to beseated in the grooves whereby the inner edges of the elements beyond thetongue will engage and rest upon the periphery of the body, and meansfor securing the elements against displacement with respect to the body.

12. A pulley of the character described embodying a bodyprovided with aplurality of longitudinal grooves opening through the periphery thereofand having restricted entrance openings at the periphery of the body, asurface'for the pulley, said surface embodying a plurality ofcomparatively narrow segmental shaped elements, tongues projecting fromthe inner edges of the elements, 7

said tongues conforming to the contour of and adapted to be seated inthe grooves whereby the inner edges of the elements beyond the tongueswill engage and rest upon the periphery of the body, and means forsecuring the elements against displacement with respect to the body, thesaid elements being arranged end to end in adjacent series, the elementsof one series being arranged in staggered relation with respect to theelements of the next laterally adjacent series.

13. An element for surfacing pulleys, said element being formed ofcomparatively narrow sheet material and being of a slightly arcuateconfiguration, said element having a tongue or projection extending fromthe inner edge of the element intermediate its edges and being disposedwithin the confines of the lateral faces of the element.

14-. An element for surfacing pulleys, said element being formed ofcomparatively narrow sheet material and being of a slightly arcuateconfiguration, said element having a tongue or projection extending fromthe inner edge of the element intermediate its edges and being disposedwithin the confines of the lateral faces of the element, said tongue orprojection being disposed to one' side of the longitudinal center of theelement whereby one end of the element on one side of the tongue Will belonger than the other end adapting said element to be reversed.

15. A pulley of the character described embodying a body portionprovided with a plurality of spaced grooves opening through theperiphery thereof, a plurality of disklike annular elements encompassingthe said body, each of-the said elements embodying a plurality ofsegments, each segment having a tongue projecting from the inner edgethereof, said tongues conforming to the contour of and adapted to beseated in the grooves, means forming closures for the ends of thegrooves, and means for exerting lateral pressure upon the segments forclamping the parts together.

16. A pulley of the character described embodying a body portionprovided with a plurality of grooves opening through the peripherythereof, a plurality of comparatively narrow segmental shaped elements,each of said elements having a tongue projecting from the inner edgethereof, said tongues being adapted to be seated Within the grooves, thesaid elements being arranged side by side and also encompassin the body,and means for exerting lateral pressure upon the segments for clampingthe parts together.

In' testimony whereof I have signed my name to this specification onthis 9th day of July, A. D. 1920.

JOHN B. CASTING.

